skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Vitrification of waste with conitnuous filling and sequential melting

Abstract

A method of filling a canister with vitrified waste starting with a waste, such as high-level radioactive waste, that is cooler than its melting point. Waste is added incrementally to a canister forming a column of waste capable of being separated into an upper zone and a lower zone. The minimum height of the column is defined such that the waste in the lower zone can be dried and melted while maintaining the waste in the upper zone below its melting point. The maximum height of the column is such that the upper zone remains porous enough to permit evolved gases from the lower zone to flow through the upper zone and out of the canister. Heat is applied to the waste in the lower zone to first dry then to raise and maintain its temperature to a target temperature above the melting point of the waste. Then the heat is applied to a new lower zone above the melted waste and the process of adding, drying and melting the waste continues upward in the canister until the entire canister is filled and the entire contents are melted and maintained at the target temperature for the desired period. Cooling ofmore » the melted waste takes place incrementally from the bottom of the canister to the top, or across the entire canister surface area, forming a vitrified product.« less

Inventors:
 [1];  [2]
  1. Shoreham, NY
  2. Kew Gardens Hills, NY
Publication Date:
Research Org.:
RADIOACTIVE ISOLATION CONSORT
OSTI Identifier:
873961
Patent Number(s):
US 6283908
Application Number:
09/564,774
Assignee:
Radioactive Isolation Consortium, LLC (Falls Church, VA)
DOE Contract Number:  
AC26-98FT40450
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
vitrification; waste; conitnuous; filling; sequential; melting; method; canister; vitrified; starting; high-level; radioactive; cooler; added; incrementally; forming; column; capable; separated; upper; zone; minimum; height; defined; dried; melted; maintaining; below; maximum; remains; porous; permit; evolved; gases; flow; heat; applied; dry; raise; maintain; temperature; target; process; adding; drying; continues; upward; entire; filled; contents; maintained; desired; period; cooling; takes; bottom; top; surface; product; high-level radioactive; upper zone; radioactive waste; level radioactive; target temperature; evolved gases; waste starting; /588/

Citation Formats

Powell, James R, and Reich, Morris. Vitrification of waste with conitnuous filling and sequential melting. United States: N. p., 2001. Web.
Powell, James R, & Reich, Morris. Vitrification of waste with conitnuous filling and sequential melting. United States.
Powell, James R, and Reich, Morris. 2001. "Vitrification of waste with conitnuous filling and sequential melting". United States. https://www.osti.gov/servlets/purl/873961.
@article{osti_873961,
title = {Vitrification of waste with conitnuous filling and sequential melting},
author = {Powell, James R and Reich, Morris},
abstractNote = {A method of filling a canister with vitrified waste starting with a waste, such as high-level radioactive waste, that is cooler than its melting point. Waste is added incrementally to a canister forming a column of waste capable of being separated into an upper zone and a lower zone. The minimum height of the column is defined such that the waste in the lower zone can be dried and melted while maintaining the waste in the upper zone below its melting point. The maximum height of the column is such that the upper zone remains porous enough to permit evolved gases from the lower zone to flow through the upper zone and out of the canister. Heat is applied to the waste in the lower zone to first dry then to raise and maintain its temperature to a target temperature above the melting point of the waste. Then the heat is applied to a new lower zone above the melted waste and the process of adding, drying and melting the waste continues upward in the canister until the entire canister is filled and the entire contents are melted and maintained at the target temperature for the desired period. Cooling of the melted waste takes place incrementally from the bottom of the canister to the top, or across the entire canister surface area, forming a vitrified product.},
doi = {},
url = {https://www.osti.gov/biblio/873961}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {9}
}